:root {
    color-scheme: light;
    font-family: Inter, system-ui, sans-serif;
    background: #f5f7fa;
    color: #152238;
}

body { margin: 0; }
main { max-width: 52rem; margin: 8vh auto; padding: 2rem; }
.panel { background: white; border: 1px solid #dbe2ea; border-radius: .75rem; padding: 2rem; }
.muted { color: #53657a; }